וַיֹּ֗אמֶר הַגִּ֤שָׁה לִּי֙ וְאֹֽכְלָה֙ מִצֵּ֣יד בְּנִ֔י לְמַ֥עַן תְּבָֽרֶכְךָ֖ נַפְשִׁ֑י וַיַּגֶּשׁ־לוֹ֙ וַיֹּאכַ֔ל וַיָּ֧בֵא ל֦וֹ יַ֖יִן וַיֵּֽשְׁתְּ׃
And he said: ‘Bring it near to me, and I will eat of my son’s venison, that my soul may bless thee.’ And he brought it near to him, and he did eat; and he brought him wine, and he drank.
Zohar
It is written, "and he brought him wine, and he drank" (Beresheet 27: 25), (not 'he served him'). By this he hints that he served him wine from afar. According to Rabbi Elazar, this means that he brought him wine in which there is complete joy, to gladden Isaac, for he needed cheering, as the side of the Levites needs cheering, Therefore, "he brought him wine, and he drank."